Home / 638,346.47-880,917.90-351,871.34

Finding the Fourth Proportional to 638,346.47, 880,917.90 and 351,871.34

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Solution

The fourth proportional to 638,346.47, 880,917.90 and 351,871.34 is: 485,582.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,346.47 : 880,917.90 = 351,871.34 : x
  2. Step 2: Convert to fraction form
    638,346.47/880,917.90 = 351,871.34/x
  3. Step 3: Cross multiply
    638,346.47x = 880,917.90 × 351,871.34
  4. Step 4: Simplify right side
    638,346.47x = 309,969,757,498.40
  5. Step 5: Solve for x
    x = 309,969,757,498.40/638,346.47
  6. Step 6: Final answer
    x = 485,582.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.